According to the 2002 census of the National Statistics Institute, Linares spans an area of 1,456.7 km2 (562 sq mi) and has 83,249 inhabitants (40,518 men and 42,731 women). Of these, 68,224 (82%) lived in urban areas and 15,025 (18%) in rural areas. The population grew by 7.7% (5,933 persons) between the 1992 and 2002 censuses.[2]

The municipality covers an area of 1.466 km2 (1 sq mi) and the city proper, 16 km2 (6 sq mi). The rivers Ancoa, Putagán and Achibueno are the main rivers that pass through the municipality or form its natural borders.

Most of the territory of the municipality is located within the central plain or "depresión intermedia" (Valle Central de Chile). Some low altitude hills are located in the westernmost part of the municipality, while its easternmost part is marked by the presence of the foothills of the Andes mountains. The municipality of Linares is bordered on the west by San Javier; on the north by Villa Alegre, Yerbas Buenas and Colbún; on the east, by Colbún, and on the south, by Longaví. The municipality of Colbún occupies the easternmost strip of the province, where some of the highest provincial peaks are located, as are the sources of several of the main rivers.

Linares has a mild Mediterranean climate. The summers are hot and mainly dry (November to March) with temperatures reaching up to 32 -33 degrees Celsius on the hottest days. The winters (late May to mid September) tend to be rather humid and rainy, with typical maximum daily temperatures of 14-15 degrees Celsius, and minimum just above freezing.

Linares was founded on May 23, 1794, as the "Villa de San Ambrosio de Linares" by Ambrosio O'Higgins, the then Viceroy of Peru and Bernardo O'Higgins's father. The city counts among its natives important statesmen, politicians, poets, writers, and musicians and is an active commercial, agricultural, industrial, and service center.

According to the 2002 census of the municipality of Linares, 75.41% (or 45,987 persons) of the total population aged 15 and older identified themselves as Roman Catholic; 15.74% described themselves as evangelical Protestants; and 0.61% as Jehovah's Witnesses. Additionally, 0.70% of the total population aged 15 and older identified themselves as Mormons, approximately 2.59% declared themselves followers of other religions, and 4.95% of the population declared themselves atheist or agnostic.

Linares is a see of a diocese of the Roman Catholic Church, with nine active parishes and many chapels in the comuna. There are also many churches that serve the various Protestantdenominations and places of worship for Jehovah's Witnesses or Mormons.

The parish church, Corazón de María — a church declared a National Monument for its Gothic style and beauty

The "Museo de Arte y Artesanía" (Museum of Arts and Crafts)

Some old houses of colonial style

A main library

Some natural attractions in the surrounding area include the piedmont of the Andes mountains, with forests of pines and other trees; lakes (the artificial Colbún lake); rivers, and good camping and hiking areas.